What is collection of lymph tissue in the groin called?

The collection of lymph tissue in the groin is called the inguinal lymph nodes. These nodes play a crucial role in the immune system by filtering lymph fluid and trapping pathogens, such as bacteria and viruses. They are part of the lymphatic system and help in the body's defense against infections. Inguinal lymph nodes can become swollen during infections or other medical conditions.